chore(deps): update dependency com.diffplug.spotless:spotless-maven-plugin to v3.8.0

Author: renovate[bot]

pom.xml

@@ -66,7 +66,7 @@
                 <plugin>
                     <groupId>com.diffplug.spotless</groupId>
                     <artifactId>spotless-maven-plugin</artifactId>
-                    <version>3.4.0</version>
+                    <version>3.8.0</version>
                     <configuration>
                         <java>
                             <googleJavaFormat>